Tadashi Endou is visited by his classmate, Sumida, every day to hand him class printouts after a traumatic experience forces him to shut himself in his own room. And within his confines, walls are lined end-to-end with mysterious photographs that he cannot remember taking. The scene - an alleyway bathed in the colors of sunset. The mysteries come to a breaking point when Endou discovers that Sumida isn't an actual person in his class; and so begins a surreal journey to recover memories once lost in a supernatural mystery drama by the author of Raincoat Kids.